Featuring an automatic valve adapter, the Crank Brothers Sterling Pump is a premium, high quality alloy pump, with a high pressure rating and smooth pumping action. Keep a Crank Brother Sterling Pump in your pack at all times for those vital emergencies.

Featuring an automatic valve adapter, the Crank Brothers Sterling Pump is a premium, high quality alloy pump, with a high pressure rating and smooth pumping action. Keep a Crank Brother Sterling Pump in your pack at all times for those vital emergencies.